Again, it's unlikely there ARE any elements to recomposite.
Frankly, if a DE had to be re-done I'd junk some of the dumb decisions made for the 2001 release which violated the intent of the artists who originally worked on the film (I'm looking at you, San Francisco). Why get the Doctormans of the world to consult instead of the Proberts of the world, who actually worked on the damned thing originally?
Sadly, getting the original guys who worked on it is not always a guarantee that the final product will be good.
Which you could apply to anyone, so it's kind of meaningless argument. The chances it'll be closer to the original intent are likely higher if you used people who actually worked on the original. No guarantee, but more likely just because their knowledge of the subject is likely more intimate.